The Japanese Giant Salamander is the second-largest amphibian in the world, reaching lengths of 1.5 meters. They are typically a mottled brown coloration with knobby and wrinkly, slick skin. Their heads are large and round, with small, almost vestigial eyes, and their legs are proportionally short compared to those of other Salamanders.
- Their vision is poor, so prey is located using motion-sensing electro-receptors in their face, and captured with sudden sideways movements of their heads.
- The Giant Salamander is almost completely aquatic and rarely ventures out on land, except when in search of a new habitat.